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Description of substance: Colorless liquid with a strong, ammonia-like odor.

LEL: . . 1.2% (10% LEL, 1,200 ppm)

Original (SCP) IDLH: 1,000 ppm

Basis for original (SCP) IDLH: The chosen IDLH is based on the UCC [1970] report that a 4-hour exposure to 1,000 ppm killed 1 of 6 rats.

Short-term exposure guidelines: None developed

ACUTE TOXICITY DATA:

Lethal concentration data:

Species

Reference

LC50

(ppm)

LCLo

(ppm)

Time

Adjusted 0.5-hr

LC (CF)

Derived value

G. pig

Mouse

Rat

Carpenter et al. 1948

Izmerov et al. 1982

Smyth et al. 1951

LC33: 1,000

-----

LC17: 1,000

-----

1,425

-----

4 hr

2 hr

4 hr

2,000 ppm (2.0)

2,280 ppm (1.6)

2,000 ppm (2.0)

200 ppm

228 ppm

200 ppm

Other animal data: RD50 (mouse), 184 ppm [Nielsen and Yamagiwa 1989].

Human data: None relevant for use in determining the revised IDLH.

Revised IDLH: 200 ppm

Basis for revised IDLH: The revised IDLH for triethylamine is 200 ppm based on acute inhalation toxicity data in animals [Carpenter et al. 1948; Izmerov et al. 1982; Nielsen and Yamagiwa 1989; Smyth et al. 1951]. This may be a conservative value due to the lack of acute inhalation toxicity data for workers.